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Rule One
R1 Protein Whey Isolate
Our analysis — editorial take, not from the label
A fully disclosed isolate and hydrolysate blend with no whey concentrate filler, giving a leaner macro profile (2 g carbs, 0.5 g fat) than concentrate-based whey blends at the same 25 g protein dose.
- Protein
- 25 g
- Protein by weight
- 78%
- Source
- whey isolate and hydrolysate blend
- Servings
- 29
Price tier: Mid-range · relative cost per full serving across this database
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Milk Chocolate flavor verified; sweetened with sucralose and acesulfame potassium, with numerous other flavors available.
Label verified: July 2026 · View supplement facts image
Label data
Per full serving · 29 servings per container · from the manufacturer's panel
| Protein per serving | 25 g |
|---|---|
| Serving size | 32 g |
| Protein per scoop | 78% |
| Calories | 110 |
| Total carbohydrate | 2 g |
| Total fat | 0.5 g |
| Source | whey isolate and hydrolysate blend |
| Sweetener | sucralose and acesulfame potassium |
| Whey Protein Isolate and Hydrolyzed Whey Protein Isolate Blend | 25 g protein |
| Naturally Occurring BCAAs | 6 g+ |
| Proprietary blend | Total only — source ratio undisclosed |
Primary label source: Rule One Proteins — official product page (R1 Protein Whey Isolate) · verified July 2026
Cautions
- Contains milk and soy.
- Sweetened with sucralose and acesulfame potassium, non-nutritive sweeteners some people find cause digestive upset.
- Hydrolyzed whey protein can taste more bitter than standard isolate for some users.
Formulated for healthy adults — not intended for anyone under 18. Full health & safety notes
Product details
Where this label sits
Rule One R1 Protein Whey Isolate is one of the protein powders in the Scoop Sense database. The label uses at least one proprietary blend, so a blend total stands in place of the individual amounts inside it. It runs 29 servings per container at the full labeled serving. Everything on this page comes from the manufacturer's supplement facts panel as of July 2026 — never from the marketing page.
Key ingredients & studied doses
- Whey Protein Isolate and Hydrolyzed Whey Protein Isolate Blend · 25 g protein. A fast-digesting, low-lactose isolate blend with no whey concentrate, studied for supporting muscle protein synthesis after resistance training.
- Naturally Occurring BCAAs · 6 g+. Branched-chain amino acids present within the whey protein itself, studied for their role in triggering muscle protein synthesis.
Flavors & sweetener
Milk Chocolate flavor verified; sweetened with sucralose and acesulfame potassium, with numerous other flavors available.
Who it's best for
A standard-ratio powder — fine as a food supplement when total daily protein is what matters. Skip it if you want every individual dose disclosed on the label. Derived from the label figures above — not medical advice.
How we log this label
Every entry is built the same way: we read the current supplement facts panel, log each disclosed dose, compare it against the amounts used in published research, flag proprietary blends, and state the cautions plainly. The full methodology explains each step.
This label against the research
How we evaluate labelsEach bar shows the amount commonly used in published human research, and where this label's dose falls against it. Research amounts are context, not a recommendation — they are not doses, and nothing here is medical advice.
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Protein25 g
At or above the studied amount0studied range 20 g–40 g50 g
Per-meal doses studied for muscle protein synthesis run about 20–40 g of high-quality protein, with the upper half of that range favoured for larger athletes and older adults.
Source: Jäger et al., Journal of the International Society of Sports Nutrition 2017 — “General recommendations are 0.25 g of a high-quality protein per kg of body weight, or an absolute dose of 20–40 g.”
One or more amounts on this label sit inside a proprietary blend, so the individual doses behind the blend total cannot be compared at all.
Common questions about Rule One R1 Protein Whey Isolate
How much of a Rule One R1 Protein Whey Isolate scoop is actually protein?
25 g of protein from a 32 g serving — about 78%. The rest is flavoring, fats, carbs, and whatever else the label lists. A higher percentage means less filler per scoop.
What does the proprietary blend in Rule One R1 Protein Whey Isolate hide?
The Whey Protein Isolate and Hydrolyzed Whey Protein Isolate Blend lists 25 g protein as a combined total. A blend total tells you the sum of its ingredients, not the individual doses inside it — which is why blend entries can't be checked against studied amounts.